The present invention is related to a door, preferably a glazed door. The glazed door includes a peripheral doorframe and a window frame having opposed first and second sides. First and second door facings are secured to opposing sides of the peripheral doorframe. Each of the door facings has an opening. The door facings have adjacently disposed inner surfaces, and each of the opposing sides of the window frame is secured to an associated inner surface about the associated opening. A window is secured within the window frame. The present invention is also related to a method of making the glazed door, and a panel component resulting from the disclosed method.
Man-made boards, such as fiberboard, e.g., hardboard; chipboard; oriented strand board-fiberboard composites; particle board; oriented strand board-particle board composites; and the like, commonly are embossed on their intended visible major surface in the manufacture of interior paneling, wainscoting, exterior siding, and particularly in the manufacture of door facings. As well known in the art, door facings may be laminated to a support structure or frame to form a hollow core door. The facings may be formed to simulate multi-panel doors.
Such articles may be molded from a planar cellulosic mat, which typically includes cellulosic fibers or particles and a resin binder. The mat may be molded to include one or more depressions or grooves, such as one or more square or rectangular depressions that do not extend to an outer edge of the article. These depressions may define the perimeter of one or more simulated panels.
Molded articles are generally much less expensive than comparative solid, natural wood articles. In addition, various methods of producing molded articles having a relatively high quality exterior surface have been developed. For example, a molded article having a high quality exterior surface with decorative molded depressions is disclosed in U.S. Pat. No. 5,543,234 to Lynch et al., the disclosure of which is incorporated herein by reference. Molded articles may also be formed to have outwardly extending contoured portions by “reverse molding” techniques, as disclosed in WO 0181055 to Lynch et al., the disclosure of which is incorporated herein by reference.
It is sometimes desirable for doors to have a glazing unit, frequently provided in the form of a cassette. A cassette is a framed window assembly adapted to be mounted to a door. The cassette and door blank are generally manufactured separately from one another. As well known in the art, a hollow core door may include a peripheral frame and two door facings, wherein each facing is secured to an opposite side of the frame. In addition to the peripheral frame, a smaller, internal window frame may also be provided for accommodating a cassette. A portion of each door facing is routed or cut out in an area corresponding to the area defined by the window frame. The facings are then secured to the frames using an adhesive. Then, the cassette is mounted within the window frame, and secured therein using screws, molding, or some other suitable fastening means.
Cassettes are available in a variety of shapes and sizes, and comprise first and second halves that hold a separate glass unit. Cassettes are installed on a door after the door facings and internal framing have been pressed together and removed from the press. The first halve of the cassette is positioned against one facing. The glass is then placed in position, and the second halve is positioned against the opposing facing, sandwiching the glass therebetween. The cassette is then secured in place on the door using pins or screws. Thus, the cassette must be mounted to the door after the door has been pressed, thereby increasing manufacturing time and cost. Therefore, conventional glazed doors having such cassettes are relatively expensive, given the additional manufacturing steps and materials required. In addition, some cassettes are formed from relatively expensive plastic, which further increases the cost of manufacture.
Cassettes typically have a thickness that is greater than the thickness of the doorframe, and protrude outwardly from the exteriorly disposed surfaces of the door facings. The resulting glazed door includes a window assembly that protrudes outwardly from the exterior plane of the door facings, which may be undesirable to consumers. Furthermore, the cassette on such a glazed door may be easily damaged, particular during transit, given it protrudes from the exterior plane of the door facings.
Conventional methods of making such glazed doors are not cost efficient, since the part cut out from the door facing has no further use and is generally discarded as scrap. Typically, portions of the facings that will accommodate the cassette are removed by cutting or routing. This often results in an unfinished, sharp edge on both the door facing and the portions being scrapped. The resulting door may appear unfinished and unacceptable to consumers.
Therefore, there is a need for a glazed door, and a method of making the glazed door, that is cost efficient, whereby cut out portions of the facings are not discarded as scrap. The glazed door should be aesthetically pleasing to consumers, having a window assembly profile that does not protrude from the exterior plane of the door facings.
A door comprises a peripheral doorframe and a window frame having opposed first and second sides. First and second door facings are secured to opposing sides of the peripheral doorframe. Each of the door facings has an opening. The door facings have adjacently disposed inner surfaces and each of the window frame sides is secured to an associated inner surface about the associated opening. A window is secured within the window frame.
A molded door skin that is pressed so that one or more interior panels are severed from the frame or the door skin has a perforated interior panel or weak fracture area surrounding an interior panel that can easily be sanded or punched out in a post forming procedure.
The present invention is also directed to a method of making a door. First and second door facings are provided. Each of the door facings has adjacently disposed inner surfaces and a panel portion. The panel portion is removed from each of the facings to form an opening. A peripheral doorframe and a window frame having opposing first and second sides are provided. A window is secured within the window frame. The door facings are secured to opposing sides of the peripheral doorframe, and an associated inner surface about the associated opening of each of the door facings is secured to each of the window frame sides. The removed panel portion may be secured to a surface.
As best shown in
As best shown in
Preferably, window frame 14 has a thickness that is substantially equal to the thickness of peripheral doorframe 12. Door facings 16, 18 typically have a thickness of about 3.0 mm. Conventional doors generally have a total thickness of 34.0 mm, 40 mm, or 44 mm. Preferably, window frame 14 and peripheral doorframe 12 each have a thickness of about 28.0 mm, 34.0 mm, or 38.0 mm, depending on the total thickness desired (and the thickness of door facings 16, 18). In this way, one press may be used for door facings 16, 18, and one thickness of glass for window 40 may be used for manufacturing doors of variable thickness. A different door thickness is achieved simply by changing the thickness of window frame 14 and peripheral doorframe 12. This provides a relatively inexpensive method of manufacturing doors having different thicknesses, since the material used to form window frame 14 and peripheral doorframe 12 is relatively inexpensive.
By contrast, conventional methods of manufacturing different thickness doors typically require changing the profile depth of the contoured portion of the door facing. This involves using a different press for different door facings. Alternatively, conventional methods may require that thicker window glass be used to make a thicker door. Such conventional methods are substantially more expensive, given additional equipment (i.e. multiple presses) and/or relatively expensive materials (i.e. relatively thick glass) are required.
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Glazed door 10 preferably also includes some type of spacer between contoured portions 44, 44A and the opposing sides of window 40. As best shown in
As best shown in
In a second embodiment, as best shown in
Notched bead 53 includes a notch 53A for receiving edges 46, 46A. Preferably notch 53A overlaps a portion of exterior surfaces 20, 22 adjacent edges 46, 46A. For example, notch 53A may have a depth of about 2.0 mm. In this way, any sharp or unfinished portions of edges 46, 46A are covered by notched bead 53. Notched bead 53 also includes a curved bottom 53B having outer and inner tips 53C, 53D. After door 10 is pressed, notched bead 53 is inserted into position, as best shown in
In a third embodiment, as best shown in
In a fourth embodiment, as best shown in
Adhesive layer 59A has a sufficient initial thickness so that it is partially compressed after installation between edges 46, 46A of contoured portions 44, 44A. For example, adhesive layer 59A may have an initial thickness of about 1.0 mm prior to installation, so that spacer 59 and adhesive layer 59A have a total thickness of about 5.5 mm. After door 10 is pressed, adhesive layer 59A is partially compressed to a thickness of about 0.5 mm, so that spacer 59 and adhesive layer 59A have a total thickness of about 5.0 mm in finished door 10. It should be understood that the thickness of spacer 59 and adhesive layer 59A may vary depending on the profile depth of contoured portions 44, 44A, as well as the thickness of window 40. Therefore, the thickness values disclosed herein are for purposes of explanation, and the invention is not so limited. Rather, spacer 59 and adhesive layer 59A may be any appropriate thickness so long as they may be secured between edges 46, 46A and opposing sides of window 40, and tension spacer 59 against edges 46, 46A. Spacer 59 and adhesive layer 59A are preferably secured to window 40 before door 10 is pressed. During pressing, adhesive layer 59A is compressed. After door 10 is pressed, adhesive layer 59A partially expands and forces spacer 59 against edges 46, 46A.
In a fifth embodiment, a window frame 14′ is provided having contoured first and second sides 36′, 38′, as best shown in
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The present invention is also directed to a method of making a glazed door. First and second door facings 16, 18 are provided, as described above. For purposes of explanation, the present invention will be described with reference to door facing 16. However, it should be understood that door facing 18 is similarly configured. Door facing 16 includes a major planar surface 42 and at least one contoured portion 60 defining a panel P. Contoured portion 60 includes a base 62, as best shown in
Panel portion(s) P is removed from door facing 16, preferably by sanding, such as through use of a belt sander, to form opening 32, which severs panel portion P from the remaining portions of door facing 16. Preferably, base 62 of interior surface 24 is sanded to sanding line 64. Thus, panel portion P is detached and removed from the remaining facing 16. Door facing 16 includes contoured portion 44 after sanding to sanding line 64, as best shown in
Base 62 may also be formed to have a relatively thin caliper, or a variable caliper forming a “perforated” base 62. Specifically, the caliper of base 62 may have alternating portions of relatively standard caliper (i.e. 3.0 mm or less) with relatively thin caliper portions (i.e. 2.0 mm or less). An alternating high density/low-density fraction area is thereby formed by the alternating calipers. Panel P may be easily removed from facing 16 (or 18) along the perforated high density/low density fraction area. Specifically, sufficient areas of relatively thin caliper are provided so that panel P breaks along the perforation (i.e. the alternating high density/low density area) when a force is applied to panel P. Any sharp or uneven surfaces along edges 46, 46A may then be finished by sanding or rounding if desired. Alternatively, a spacer that curves around and covers edges 46, 46A may be used to cover any uneven surfaces, such as notched bead 53 as best shown in
The foregoing describes a mechanical operation to remove the panel P in order to form an opening in which a window frame and window may be received. It should be understood that in the manufacture of a door skin, two dies are brought together to create the molded substrate forming the door skin. We envision that the opposed dies may have elements that are brought into contact or by-pass, so that the panel P is severed from the remaining portion of the substrate during the molding process. In that event, the panel P would be removed from the mold separately from the remaining surrounding portion of the door skin, such as through a blast of pressurized air, mechanical pick-up, and the like. Moreover, the door skin could be molded from wood composites, polymeric materials, and like compositions from which door skins are manufactured.
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After removing panels P, door facings 16, 18 include openings 32, 34. Of course, additional openings may be sanded or routed if more than one window 40 is desired (such as with door 10′ or 10″). Peripheral frame 12 and window frame 14 are provided, as known in the art. Window 40 is secured within window frame 14, preferably within groove 48. Self-adhesive, semi-rigid foam 58 or spacer 59 may be secured to window 40 either before or after window 40 is secured within window frame 14. However, window 40 is preferably pre-assembled within window frame 14 prior to pressing. The components are then positioned in a press, with peripheral doorframe 12 and window frame 14 sandwiched between interior surfaces 24, 26 of facings 16, 18. Window frame 14 is aligned with, and adjacent to, openings 32, 34 and edges 46, 46A. Facings 16, 18 are preferably secured to peripheral doorframe 12 and window frame 14 using conventional adhesive, such as polyvinyl acetate. The components are then pressed together to form a door.
If glazed bead 52 or notched bead 53 is used, it may be installed around window 40 as described above after door 10 is pressed. Alternatively, the perimeter of opposing sides of window 40 (or the entire window 40) may be covered while door 10 is painted. With window 40 completely covered, such as with cardboard or paper, door 10 may be easily and efficiently painted or a finish coat applied. After painting, window 40 is again exposed, and glazing bead 52 or notched bead 53 installed. This method allows for efficiently finishing door 10, such as by applying a finish coat to exterior surfaces 20, 22. Crisp paint delineation may be achieved between exterior surfaces 20, 22 and window 40, and no paint or finish is splattered on glazing bead 52 or notched bead 53 since it is not installed until after application of the finish coat.
If a spacer and/or filler is not used, such as in the fifth embodiment, the associated interior surfaces 24, 26 of contoured portions 44, 44A are secured flush against first and second sides 36′, 38′ of window frame 14′ during pressing. It should be understood that first and second sides 36′, 38′ may have various configurations, depending on the profile of contoured portions 44, 44A and consumer preference. Alternatively, other spacers may be used instead of glazing bead 52 or foam 58, such as rubber spacers.
In a preferred embodiment of the present invention, the resulting panel P removed from facing 16 (or 18) is then used as a plant-on component. As best shown in FIGS. 14 and 15, panel P includes a skirt portion 64 and a planar portion 66. Skirt portion 64 is angled downwardly relative to planar portion 66. Skirt portion 64 is formed when sanding or routing out base 60 of contoured portion 44 (as shown in
An outer end 68 of skirt portion 64 may be cut or sanded to have an angled edge 68a, as best shown in
Panel P may then be adhesively secured to a surface as a decorative plant-on component. As known in the art, plant-on components provide a cost efficient alternative to complete replacement of a door or other surface (such as wainscot, cabinet doors, furniture doors, and the like) for changing the contour and appearance of the surface. For example, plant-on panel component P10 may be secured to opposing sides of a door 100, as best shown in
As best shown in
Alternatively, skirt portion 64 may be tensioned against a planar surface. When viewed in cross-section, skirt portion 64 is disposed angularly relative to the plane of panel portion 66 (as shown in
Certain aspects of the present invention have been explained according to preferred embodiments. However, it will be apparent to one of ordinary skill in the art that various modifications and variations can be made in construction or configuration of the present invention without departing from the scope or spirit of the invention. Thus, it is intended that the present invention cover all such medications and variations.
This is a non-provisional application of provisional patent application No. 60/472,741, filed May 23, 2003, the disclosure of which is incorporated by reference and priority to which is claimed under 35 U.S.C. § 120.
Number | Date | Country | |
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60472741 | May 2003 | US |